After hours of serious talk, the two friends reached an agreement. which words describe the noun agreement in the sentence? abstract, collective, common abstract, singular, common concrete, collective, proper concrete, singular, proper

In the sentence we can observe that the noun here is described by “two friends”. Hence by identifying this noun we can say that this noun is a:
1.      Common nouns are type of nouns which refers to a set of objects, individuals or events without particularity.
2.      Plural nouns are nouns that exceed more than one idea, object or animal.
3.       Concrete nouns are nouns that can be felt by the different senses, see, hear, smell, touch and feel.
4.       Count nouns are nouns that are realistic and can be counted and tallied.

Sorry i can't you here.